1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209edb7f23bba36d45894bbd9fd9c70521646c19452d60459a15276049448c70. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/10ddca01-7799-4d58-be7d-849a44d17eee.json and https://artists.proofprofile.net/proofs/artist/10ddca01-7799-4d58-be7d-849a44d17eee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e20738031a94fa6aa26243c6ba6a155a4a341750965844f5f2b88bd3eba43d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83554da6e015527d79fd944d3beca39158d0aefee3ad3379d85f5d5007ff5d6d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80b455ffad10d5bd4ce41682461943c6a74aa29305610dbb99610926b60255. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e20738031a94fa6aa26243c6ba6a155a4a341750965844f5f2b88bd3eba43d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c8cda1d3d1f8088f83afccf800b397b37b28a9f47cf1f6e3094efadb34c219. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77276e23431a3d5132f46fe73b7aa95602d522b2ecc62a6777bbbf80bb0164a7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a0e461c281514fdafe312eeb5df71d764ff22abd8d7aa2576d5970228e0c8a. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6906217ef696e8c93c58b308cf04fd3aab482dc3c3f7d417c9c972b807296479. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bb2f94601635c42182d6fc037b9580825c879abd867129a9b1bc2a7cb16480. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83554da6e015527d79fd944d3beca39158d0aefee3ad3379d85f5d5007ff5d6d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020a5f956859f5abe68d7db7b9850b791f9a118100d006040704ef8645a182f2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a905228237cdbd6c55f1ecf2c6d549e0d9c1f5f30fcced460ac6b21110a5f5a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12523037.